#include <iostream>

using namespace std;


//define预处理器，const关键字
#define LENGTH 10
#define WIDTH 5
#define NEWLINE '\n'

int main()
{
    //整数常量
    cout << 212 << endl;
    cout << 215u << endl;
    cout << 0xFeel << endl;
    cout << 077 << endl;
    cout << 032U << endl;

    //字符常量
    cout << "Hello\tWorld\n\n"
         << endl;

    //
    int area;

    area = LENGTH * WIDTH;

    cout << area;
    cout << NEWLINE;

    return 0;
}